Exercising in the Heat
A large percentage of people couldn’t finish the race, says Branch.
For you, exercising in the heat may not mean running 26.2 miles. But even if
you’re not planning to run a marathon, you want to be smart before embarking on
a summer workout.
When taking on summer exercise outdoors, says Argyle, Texas, exercise
physiologist Jaime Roberts, "we need to be aware of the increase in heat
Typically, says Roberts, our bodies are warmer than the environment. When
that begins to change, our muscles regulate heat by releasing sweat, which
allows the body to cool itself. But when the body is sweating, it’s losing
fluid, she says.
Heat exhaustion and heat stroke, dangerous side effects of overdoing summer
exercise, come when the body can no longer sustain the pace, the heat, the
humidity, or the loss of fluid.
"The body cools off by sweating," says Roberts, "and as long as
you remain hydrated, the body is able to cool itself off."